How To Handle And Operate A Concrete Pump Safely

Concrete pumps are rather simple pieces of equipment. However, you should be aware that you should know and implement the safety rules that will keep you away from injuries.

The first condition for operating a concrete pump safely is to read and understand the user manual and the safety instructions that come with the equipment. You should proceed exactly as instructed, and wear all the protective equipment mentioned in the manual. Ignoring these instructions may lead to severe injuries. Moreover, you can harm the other people around, the workers, the walkers and everybody else in the operating range of the concrete pump. This is something you have to take very seriously, in order to avoid such incidents. If you work in a team, you need to instruct all other members on the safety rules of operating the pump.

The daily inspection of the equipment and of all accessories is a must, as this can help you prevent accidents. You should perform the inspection before the pump starts. Should you notice anything unusual, you should fix the problem above everything else. Never start an equipment that doesn’t pass this regular inspection with flying colors.

The pump flow rates should match the discharge rates of the delivery trucks. This is important, as different rates may lead to accidents. Ideally, you should have clear view of the hose hand and of the hopper. If the operating position of the pump doesn’t allow you to have clear view, you should make sure another competent individual is based at the hopper. This person will have to shut down the pump when needed.

Last but not least, you should never leave the equipment unattended. This means you shouldn’t let the delivery truck driver to be the only one to supervise the pumping of the concrete. Moreover, the person in charge to attend the pump should be experienced and knowledgeable. Never assign this job to an apprentice.

By following all these instructions, you may never experience any incidents during concrete pouring operations. When the equipment is carefully checked and the regular maintenance works are always taken care of, concrete pumps don’t pose any major safety risks. Pick a reliable contractor to perform all maintenance works and all repairs. Just follow the instructions from the manufacturer and the safety rules and regulations, wear your protective equipment, and you’re going to be just fine.

Best pumping concrete techniques and applications

The majority of the concrete pump projects are for larger concrete placements as well as areas that are complex to reach such as a basement or second floor where there is limited access to the site. The speed and ease of using truck mounted or trailer concrete-pumps to direct concrete can save you on a lot of money, time and manpower.

Concrete Pump Types

There are generally 2 concrete types that are used to transport concrete and involve the best concrete pumping methods. These include:

1. Direct Acting Concrete Pumps

2. Squeeze Type Concrete Pumps

The Direct Acting Concrete Pumps

The main types of the concrete pumps happen to be the direct-acting that feature horizontal piston-type along with semi-rotary valves. Operation and the methods of a direct-acting pump are very simple. Concrete will be fed into a pump using gravity along with partial suction which is created from reciprocating motions of a horizontally-acting piston. The semi-rotary valves close and open alternately. The suction pressure in association to 0.08 N/mm2 will be created within the pumping-cylinder under conditions that are favorable.

The ideal suction conditions will be obtained when the diameter associated with a suction pipe happens to be the same when compared to the pumping-cylinder which means the concrete is able to flow unhindered. The concrete need to flow freely in the full-cross sections of a suction pipe and any possible blockages caused from over-sized aggregates needs to be avoided. In the ideal situation, the suction-pipe needs to be more than 3 times the largest size of aggregates inside the concrete which is pumped.

The Squeeze Type Concrete Pumps

The Squeeze Type Pump is a peristaltic and smaller portable pump type. Concrete that comes from a collecting hopper will be fed by the rotating blades which are directed into flexible pipes which are connected onto a pumping chamber. This chamber is under vacuum of around 0.08 N/mm2. This vacuum is what ensures except when it is squeezed by rotating rollers that the shape of the pipe stays cylindrical which allows for a flow of concrete that is continuous and unhindered.

The 2 rotating rollers which have been mounted onto the planetary drives are what progressively squeeze these flexible pipes. This is what pushes concreted into a delivery pipe. An output of around 20 m3/h is obtainable with the squeeze pumps that use 75-mm diameter pipelines.